JUST ADDED: 5 Seconds of Summer will be rocking the stage at this year's iHeartRadio Music Festival Village in Las Vegas! The band sat down with Ryan Seacrest to break the news. Click here to buy your tickets now, before they sell out!
Justin Timberlake was back on 'Late Night with Jimmy Fallon' Tuesday night for the latest installment of 'Timberlake Tuesdays.' In a hilarious sketch, JT and JF communicated almost entirely in hashtags.
It's pretty #hilarious.